satellite tvcoming down to earth wideband distribution ......1414 zenith tv chassis 12cb12x april...
TRANSCRIPT
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APRIL 1972 IL A HARCOURT BRACE JOVANOVICH PUBLICATION
WORLD'S LARGEST TV -RADIO SERVICE & SALES CIRCULATION
Satellite TV...Coming Down to Earth
Wideband Distribution Equipment
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The Toler PeoplePioneers of TV Tuner Overhauling
Originators of Complete TV Tuner ServiceCastle offers the following services to solve 411 your television tuner problems.
Universal Replacements from $8.95These universal replacement tuners areall equipped with memory fine tuningand uhf position with plug input foruhf tuner. They come complete withhardware and component kit to adaptfor use in thousands of popular TVreceivers.
STOCKNo. HEATERS
SHAFTMin Max Snd. PRICE
CR6P Parallel 6.3v 13/4" 3" 41.25 6.95
CR7S Series 600mA 13/4" 3" 41.25 9.50
CR9S Series 450mA 13/4" 3" 41.25 9.50CR6XL Parallel 6.3v 21/2" 12" 41.25 10.45
CR7XL Series 600mA 21/2" 12" 41.25 11.00
CR9XL Series 450mA 21/2" 12" 41.25 11.00
Castle Replacements $15.95Castle custom replacements made to fit in place of original tuner. Purchase out-right . . . no exchange needed. Write for current list of Castle replacements, orrequest the part number you require (use number on ORIGINAL TUNER ONLY; donot use service literature numbers). Available for many of the popular models offollowing manufacturers: Admiral, Curtis Mathes, Emerson, GE, Heathkit, Magna-vox, Motorola, Muntz, Philco, RCA, Sears, Sylvania, Westinghouse, Zenith andmany private labels.
Tandem uhf- vhf replacements NOW $21.95Available in popular models of: Muntz, Olympic, Philco, Sears, Westinghouse andprivate labels.
Overhaul Service $9.95This is the service pioneered by Castle! We are now in our third decadeof serving the TY Service IndustryService on all makes and models, vhf or uhf, including transistor and color tuners. . . one price $9.95 (does not include tuners older than 10 years). Overhaul in-cludes parts, except tubes and transistors.Simply send us the defective tuner complete; include tubes, shield cover and any damaged partswith model number and complaint. Your tuner will be expertly overhauled and returned promptly,performance restored, aligned original standards and warranted for 90 days.Dismantle tandem uhf and vhf tuners and send in defective unit only. Remove all accessories . . .or dismantling charge may apply.
Custom Exchange Service $17.9.5When our inspection reveals that original tuner is unfit for overhaul, and it is notavailable from our stock of outright replacements, we offer to make a custom re-placement on exchange basis. Charge for this service is $15.95 for uhf tuner and$17.95 for vhf tuner.If custom replacement cannot be made we will custom rebuild the original tunerat the exchange replacement price.
All replacements are new or rebuilt. All prices are f.o.b. our plant. Add shippingand handling of $1.25 on all prepaid orders. We will ship C.O.D.
CASTLE TV TUNER SERVICE, INC.MAIN PLANT: 5713 N. Western Ave., Chicago, III. 60645 Ph. 312-561-6354
EAST: 130-03 89th Rd., Richmond Hill, N.Y. 11418 Ph. 212-846-5300. . . for more details circle 106 on Reader Service Card
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1414ZENITHTV Chassis12CB12X
APRIL 1972
15.0,131,5-861UK TRANSISTOR
TUNER
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46C
240
111U
MOUNTED ON TUNER
A,
FELDEITIM _1-77=L7.41.31r
COMPLETE MANUFACTURERS' CIRCUIT DIAGRAMSAND TECHNICAL INFORMATION FOR 5 NEW SETS
0401121-699 OR 121-865
A.G C.DEL AY
I F. ASSEMBLY
150-22
1101
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R401 *402ION 1511
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C2094,?tR226G
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VERT.SIZE
1122$3304
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52311.50
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+ 24V
SYMBOL DESCRIPTION ZENITH PART NO.
C203 -A-50, electrolytic cap, 2000f3.300uf electrolytic cap 175vC-550 uf electrolytic cap 175e + 22.6322D 1000, electrolytic cap. 175e
R204 -20K. volume control 63.8892R208 -3001l. contrast control 63-8898R222 -250K. bright control 63-8896R227 -7M, vert size control 63-8897R229 -1M vert hold control 63.8895R235 -voltage dependent resistor . 63-7447R236 -290K, vert lin control 63-8894
-7, 0103121- 521 OR 121-522OR 121-5283 RD. I.F.
0403121-446 OR121-861A.G.C. GATE
0407121-933
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or fuse 1.0a Ibelfusel 136-95A201 -integrator 87-11A202 -integrator 87-4
0602121-453SOUNDLIMITER
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ELECTRONIC TECHNICIAN/DEALER is pub-lished monthly by HARCOURT BRACE .10-VANOVICH PUBLICATIONS, INC.. 1 East FirstSt., Duluth, Minn. 55802. Subscription rates:One year $6, two years $10, three years $13,in the United States and Canada. Other coun-tries: One year $15, two years $24, threeyears $30. Single copies 756 in the UnitedStates, and $2 in other countries. Secondclass postage paid at Dansville, New Yorkand at additional mailing offices. Copyright1972 by HARCOURT BRACE JOVANOVICHPUBLICATIONS, INC.POSTMASTER: Send Form 3579 to ELEC-TRONIC TECHNICIAN/DEALER, HARCOURTBRACE JOVANOVICH PUBLICATIONS, INC.,1 East First St., Duluth, Minn. 55802.
0603121- 434SOUND
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0201121-743 OR 121-777VIDEO OUTPUT
TEST POINTS
BRIOIVYNE 55*222250.
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ALL VOLT.. ARE D.C. WILESS OTHERWISE SPECIFIED.
110;W:T1.1::::171TO.V4r1."g:X01!")LL RESISTORS ARE C ..... . 7/. 102. I/1 sari UNLESSTOERWISE SPECIFIED.
I INDICATES Pt. 200 TOLERANCE RAT NE USED.LL 0(5151005 IN 1.1. A SOUND ASSEMBLY ARE/A VAT, UNLESS OTHERWISE SPECItIED.
ESISTANCE MAURINE/TS SHOWN NITA COILS DISCONNECTEDTOR CIRCUIT.
COIL RESISTANCES ROY SPECIFIED ARE UNDER ONE OM.
LL [MCI° VALUES IN RICROPANAOS WILES, °TIMMS(PECIFIED.
007 CAPACITY 10 ..... CIS. SEE LRAM
ARROWS Oil POTENTIONETEAS IRDICATE (LOCUM 4010700W.
14H,0EGAHERIEr0EGACYCLE. 070111CRO.....10101CATES CHASSIS AROUND.
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Opr INDICATES ...um...C.W.O. .ALL. SELECTI, FON 0101000 TORE RIRAING.
(ARIES WIN A RANGE Of 47 IF 10 77 IF (0 KA..1011. 100EN NECESSARY. ..... C( sit. EGRET
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COPYRIGHT 1972 BY ELECTRONIC TECHNICIAN/DEALER 1 EAST FIRST STREET, DULUTH. MINNESOTA 55802
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1413SYLVANIAColor -TV ChassisD17-1-2
APRIL 1972
ELECTRONIC J-TVET4E7ica yirCOMPLETE MANUFACTURERS' CIRCUIT DIAGRAMSAND TECHNICAL INFORMATION FOR 5 NEW SETS
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0300.03010402
C.09004SAND
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300
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COPYRIGHT 1972 BY ELECTRONIC TECHNICIAN/DEALER I EAST FIRST STREET. DULUTH, MINNESOTA 55802
-
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C501.001
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GENERAL ELECTRICColor -TV ChassisN-1
NOTE: CRT SOCKET CONTAINSBUILT IN SPARK GAP.USE ONLY EXACTREPLACEMENTPART.
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R538470K
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INRED SCR
R543GRN. SCR.
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CON vERGENCE YOKEBELIE RASTER SIZE GREEN RASTER SIZE
DIFFMNIIIIVERTICAL I I VERTICAL I
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1412GENERALELECTRICColor -TV ChassisN-1
APRIL 1972
ELECTR/DEALERONIC 7 rifvETL7.4 ACTECHNICIAN
COMPLETE MANUFACTURERS' CIRCUIT DIAGRAMSAND TECHNICAL INFORMATION FOR 5 NEW SETS
SYMBOL DESCRIPTION GENERAL ELECTRIC PART NO.
R 244 -varistor I ma, ±15%, @850n EP13X2R246 -varistor. lma, ±15%, @575v EP13X3R260-thermistor, 500K, ±10%, (625" EP14X20R406 kl.xon, TOR 200 cold./5K hot EP39X4C402A-2000, +100%10%, 350v, electro EP31X18C40213-1000, +10096.10%. 175u, electro EP31X18C402C-50uf, +100%.10%, 175v, electro EP31X18ohm 2000f. *100410%, 350v, electro . . EP31X18C4038-10060, +100%10%, 1/5v, electro EP31X18C403C-50 uf, +100%10%, 175v. electro EP31X18R165 -control, AGC, 1K EP49X44R171 -control, triple contrast 500K, 20% EP49X50R176 -control, triple brite, 200K, 30% EP49X50R177 -control, 50K. brite limit adjust EP49X52R236 -control, H V adj, 350K ... FP49X46R242 -control 20M, focus adj EP49)(51R254 -control, triple, vert hold, 500K, 30% EP49X50R257 -control, dual vert height, 1M EP49X45R263 -control, dual, vert lin. 100K EP49X45R309 -control, on/off vol, 1M EP49X3R511 -control, color, 500n EP49X54R513 -control, tint, 2K EP49X55R526 -control, dual, red balance, 2K EP49X594R529 -control, dual, blue balance. 2K EP49X5940152 -transistor, NPN, silicon AGC keyer EP15X70200 -transistor, NPN. silicon, sync. amp EP15X30201 -transistor, horiz, AFC EP15X70202 -transistor, horiz react EP15X90203 -transistor, horiz osc EP15X90204 -transistor, horiz driver EP15X100501 -transistor, NPN, silicon. burst amp EP15X50502 -transistor, NPN, silicon, blanking driver EP15X9L157 -coil. 4.5MHz trap w/core EP61X3L159 -coil, delay line EP36X50L201 -coil, horiz osc EP36X55L302 -coil, quad EP36X52L401 -I ine choke, 3.2-4.1MHz EP36X571201 -xf ormer. horiz output EP77X71202-xformer, vert output EP64X71301-xformer, audio interstage EP36X341302-xformer, audio output EP64X81401-xformer, filament EP64X91 -501 -cods, chroma bandpass EP36X2T502-xformer, chroma demod EP36X65
fuse, 4 amp slow.blo (F401) EP10X7fuse, .6a slow'blo 1F4021 EP10X5fuse, 3a fast.blo 1F4031 EP1OX4yoke. deflection EP76X5yoke, convergence EP62X 18
C407.22
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PRODUCT SAFETY NOTICE
PRODuCT SAFETY SHOuLD SE CONSIDERED WHEN A COMPONENtREPLACEMENT IS MADE IN ANY AREA Of A RECEIVER. THE SHADEDAREA OF THIS SCHEMATIC DIAGRAM AND THE PARTS LISTDESIGNATE COMPONENTS IN WHICH SAFETY CAN BE OF SPECIALSIGNIFICANCE. IT IS PARTICULARLY RECOMMENDED THATGENERAL ELECTRIC CATALOGED PARTS BE USED FOR COMPONENTREPLACEMENT IN THE SHADED AREAS OF THIS SCHEMATIC.
USE OF SUBSTITUTE REPLACEMENT PARTS WHICH DO NOTHAVE THE SAME SAFETY CHARACTERISTICS AS RECOMMENDEDIN FACTORY SERVICE INFORMATION MAY CREATE SHOCK. FIREOR OTHER HAZARDS.
F4033 AMP R402
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4-820V BOOST SOURCEPIN 8 OF NV I
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1. VOLTAGE MEASUREMENTS ARE 20.000 OHMPER VOLT METER READING TAKEN WITH RESPECTTO CHASSIS COMMON. RECEIVER TUNED FORNORMAL PICTURE AC LINE VOLTAGE SETAT
PIN 6 120V. READINGS MAY VARY *10% FROM THOSEHVT SHOWN.
VSAPIN a
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ON -SIGNAL VOLTAGES AND WAVE SHAPESTAKEN WITH NOISE FREE SIGNAL
111 VOLTAGE VARIES WITH CONTROL SETTING
AGC 2.6V 0152AGC # INDICATES PRODUCTION CHANGE
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COPYRIGHT 1972 BY ELECTRONIC TECHNICIAN/DEALER 1 EAST FIRST STREET, DULUTH. MINNESOTA 55802
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33. 25 VOLT BtRIPPLE et CH14A, 34. AGC PULSE, TERMINAL P,28V 11-p, 35. BURST. AMPL., KEYING PULSE, 36. PLATE, (PIN 4) VERTICAL OUTPUT0.025V P -P, VERT. HORIZ. (PWSI I TERMINAL T (POTS[) (VI)AC, 1150V p -p, VERT. (P0152)(ON SCHEMATIC)
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COPYRIGHT 1972 BY ELECTRONIC TECHNICIAN/DEALER 1 EAST FIRST STREET, DULUTH, MINNESOTA 55802
-
1411AIRLINE
Color -TV ModelGC1 12102A
APRIL 1972
I. BASE, TPB3, 1st VIDEO AMR.(010), 2V P -P, VERT. (PWSI)
-qb -ob..
2. TPA2, SOUND DETECTOR0.25v P -P, VERT. (P051)
3. COLLECTOR, Iv VIDEO AMPL.,(010), WV P -P VERT. (Pw51)
4. GRID, HORIZ OUTPUT, V6, "AB",335V P -P HORIZ, (PW52)
EMI5. PLATE TIN 10)2nd VIDEO AMPL.,
50% CONTRAST, 100V P -P VIDEO,150V P -P BLANKING (P.152)
6. BASE, SYNC. SEPARATOR, (01 II,7V P -P, VERT. )PWSI)
7. COLLECTOR, SYNC. SEPARATOR,(0 11), 6V P -P, VERT. (PWSI)
ELECTRONIC L7 r-Ir#ETTECHNICIAN /DEALER
COMPLETE MANUFACTURERS' CIRCUIT DIAGRAMSAND TECHNICAL INFORMATION FOR 5 NEW SETS
9. RIPPLE at "NN", I8V P -P, 10. RIPPLE at "RE", 1.6v P -P,VERT. (PWS2) VERT. (Pw52)
13. AGC PULSE, BASE, AGCGATE, (09), HORIZ.(PWSI)
14. COLLECTOR, 1,1 BANDPASS AMPL.,(013), BURST 8V P -P, CHROMA
P -P, HORIZ. (PW51)
17. COLLECTOR, 2nd BANDPASS, RJI41 18. EMITTER, 2nd BANDPASS AMPL.0.22.1 P -P, 1101112. (P5851) (014), CAROM* 0. IRV P-P,Htliti2
OW51)
21. JUNC11()N RFC( AND RF46,2.2V PP,OVERALL, HORIZ.(PWS2)
22. OUTPUT R -Y Al.'NO COLOR, 90.(R/52)
o!h.'174
I V
II. RIPPLE or CH IOC, 0.1v P -P, VERT. 12. COLLECTOR, El -Y DEMODULATORUNDERSIDE CHASSIS NEAR TM73 (020), "M", 8.2V P -P, HORIZ.ION SCHEMATIC) (PWSI)
15. JUNCTION RC43 AND CRC 44,8v P -P, HORIZ. (PWS1)
19. EMITTER, B -V DEMODULATOR1020), 0,7V P -P, HORIZ.EMITTER, R -V DEMODULATOR
(0211, mORIZ.(PwS11
A
II
VL
'719
oLe.OUTPUT R -V AmPL,WITH COLOR, 25,(PW52)
16. BASE, 2nd BANDPASS, (014),CHROMA 0.13V P -F, HORIZ.(PWSI)
99. (-01 (EC TOR, R-1, DEMODULATOR(021), "N", 1.5V P -P, HORIZ.(pwS1)
a -y AMPS , V4, TPF4,OLOR, 280V P -P, HORIZ.
(PW52)
25, OUTPUT G -V AMPL., VI, TPF3,WITH COLOR, 150V P -P, HORIZ(P.(52)
29. COLLECTOR, BURST AMPL. (012),45V P -P, HORIZ. (PWSI)
LA9
LA2rn
LA20
C!) CULA28
01 02ST IF 2ND IF
1.82
060AUDIOPRE AMP
==./3
T820keDEL
°0/3Cc/3010.aY 0 ACC GATE 1ST VIDEO 0
040°C4iNC SEP
aga 1`0,
LA39
3RD03 (!) 0 L A 5 4IF LA49 0
TA 59
JH59DEGAUSSING
SOCKET
CHID
108 PY50 4110./11,9I CABLING.
LD 08 LCISAGC AMP.
C LIM1TERf;\
0 012BURST AMP.
O
0
022 -jAUDIO
OUTPUT
CH8
TH73VERT. OUTPUT
FH5.5AMPFUSE
V2 A&B2ND VIDEO AMP
SYNC AMP.
VIA&BVERT. OSC.
VERT. OUTPUT
Li
0 TCI
0142ND BAND PASS
TP02
017REACTANCE()
016 a aKILLER Amp.
3.58141.1. Ole
TC29 0 BUFFER 0015 3.58 MHZ
MORI Z. OSC.BLANKING C 02,
0013 R Y QEMOD.1ST BAND PASS
83'19 DEMOD.
9043338 NHCRYSTAL
U
V4 A,B&CR- Y AMP.G- Y AMP.
B- Y AMP.
V3A&BHORIZ. OSC.CONTROL &
HORI Z. OSC.)(X TPFI
h. FOCUS ZZTAPSn n n
eAclo
L
DEFLECTION
YOKE SOCKET
3872
VT
H.V. RECT.
RF 37H.V. ADJUST V6 VS
HORIZ. OUTPUT DAMPER
FH74 .35 AMP FUSE
:6. COLLECTOR, HORIZ., BLANKER,(015), 3.3V P -P, HORIZ.PWSI)
27. BASE, HORIZ. BLANKER, (015),5.81 P -F, HORIZ. (PW51)
30. COLLECTOR, 3.58 ME. BUFFER, 31. COLLECTOR, 3.58 MHz OSCILLATOR(0 19), 22V P -P, BASE 2.3V P -P, (OM, I IV P -P (PWSI)EMITTER 2.2V P -P, BASE 020 AND021 6V P -P (PWSI)
VHF TUNER _94C444-2
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0,011 WM*3 10 NAM 0IfIelm r05,7,01. IMMOMS UM. 0/MM rIMS0a111 M137 1117 SW& 1 MISMY 0, 7157 P0,11 PMl MIMS; 111.04173 MMUS WM. AWN 1/C1101.9115/558I Urn,.19 *VII Mmcl 70 IIIIPSIMS, 00 MI lit IM InW tO .1453/5 fMM.1 M NI PIN SP OP /al 11585410111, ION/S/01 OM 1100.1 M 07011111. MI tarIIM 10 I5(117 WAWA. 51117 0171fMCIVOIW filmaiS IM1511100IIM.M 001 MI 0.0111, 0.1.17174,11174,MCF 58411(. 051.7m0.1,0011581 01.V011 Mar ",171171117 Mad r0. 11115.ACC14.7,01N MI 0/57011,1.7011 31,1,58 0, MI CORM& 11 MC M115,01.7 IS 110,1111, 04 14 S!11/l! mffS. it WIWI, 70 AgfaIR 41)1110111. IIII10,0110311/0. so Me MIA. Cal If I171010 58,511,0 001154f15119.57 MI 0011111 O. "WSW VIM 1r5711. 110198117 00mr110 0 NW 370( Of MIC/SAM PAW 51371.110111M,:005( II 40,11/0e1W$101,11 SI Pelf IN IP mu, /01 AUS/MIII MO I Weil 17 1517 fIVII(11.* ATM "WWI WI PIP PI Mr teeNelet PI/K. CIISS/8 IS COMPII7 &WWI 70 VW, ON
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8. PLATE (PIN 4) SYNC. AMPL.,(n), 60v P -P, VERT. (PWS2)
COPYRIGHT 1972 BY ELECTRONIC TECHNICIAN/DEALER 1 EAST FIRST STREET. DULUTH, MINNESOTA 55802
-
1.221401
TO Pw200-E4(6E)
ANT TERM.0 0
UHF
C-70
96. 2:02 IkK4C 4
140(troC 6 0-~ ,4e6t5VVHF CS
C3C15
ELECTRONICTECHNICIAN/DEALER
2firff=rfiCOMPLETE MANUFACTURER S' CIRCUIT DIAGRAMSAND TECHNICAL INFORMATION FOR 5 NEW SETS
SCHEMATIC NO. SCHEMATIC NO.
AIRLINE 1411 SYLVANIA 1413Color -TV Model GC1-12102A
GENERAL ELECTRIC 1412Color -TV Chassis N-1
RCA SALES CORP. 1410TV Chassis KCS188 Series
Color -TV Chassis D17-1-2
ZENITH 1414TV Chassis 12CB12X
v2003SOUND IF
'/2 6GHBA46V 46 8205 C205
C20( 3 1112041 12 -1-A
20E.0i
R202
0/ i80082K =
faicis,4
T201 A
621233001ivy
L210 T205
10--1
.0 0217E04 8
IL202C220.11000
E
C2228
204
C204z `,"39 is o
R204(8K
V 202A504.1140 DE T1/2 17 BFII170v 7
0207- OV22001 8AV38
C200I 1000
E 4.TO R IC)
6206 13E1R208 560N470 (/7 3
v6 Ov 68C262 C12=.01 2-czlo
--E.F R )12
1201 #207 r° VOLUME-704 I MEG
V203I ST PIX IF /4/v41'-E. 7
9
2
Bi4g
C 218156
E2R2,1(000
TO 0109 .0-0(4E)
--(S) VWANT TERM
E
le?
V
3 0223/31 1680
C2210,1
11j_
6214
f15002*
j_ #238 P239= 820K (MEGE32
C209
r
fit°L4
/11181111185
V2028AL171,' OUTPUT
1/2 17BFI 1/3201 1C2i5
Ea i 2°V .1 .022t MA
a Egg ow 9 ry 1213
WI
(440
(45
225
,T104
2
LTC) +145v14C9
0o4 it 4, .*A TO ,4.1
I! 001111.1T 4.140V
1410RCA SALESCORP.TV ChassisKCS188 Series
SYMBOL DESCRIPTION
C101-3 section elec . .C101A-2500/175vC10113-4000/1754C101C-504d/175v
APRIL 1972RCA PART NO.
133082
F101 -fuse -5a, 150v 118969R112 -control volume 132956R113 -control bright 132957RF101-fuse resistor. 2K 121086S101 -control. on/off 132956T102-Kformer, high voltage, horiz 132962T103-xformer, vent output 132970T104-xformer, audio output 124275
yoke deflection 132971L207-hora hold 125129R226A-control contrast/vert holdR226B-control contrast/vent holdR257 -control vent size13260 -control vent linRV201-varistor7201A-4.5MHz 114489T201 B-4.5MHz 114489T202 -sound IF 118411
JACK7203 -quad 118410
INCUJOED ON SOME MODELS
1226A1526 CONTRAST
25K
38E:9 120,8;iler
$C24
It t45v/ (CRrr
4 v20644
T208 3 47T2ND IF7
uovf4ovC
;#,01(36
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6
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C20368 V2058
VIDEO OUTPUT_02244200
13
C 211.047
C6282051 = 0004.fe 120317c)UN
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6
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igt
C229 L2060,) 270um
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V2054AGC
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823027K
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C234 HORIZ(03
G18 82680 C250 HOLD Ofc257O390K )oo 1207
)=. 390
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C251 11269 680 43144_1 E470 560K = /01V-(001.
58201
-0263
PW boo
R202 33001 168KC253 1270
= 02545.056
25V2
(+145v1140)
V20)9 oy 8SY NC
GGH 8A
820422K
0235 13245 I2
P2E0470VERT
P24c, LINlox 3508
iiK24
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3900 560K
150K
1140K
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1/2 l7JZ8
C206.74062 -II8256
70142-41V
365 lir `641 Vc4V207
p474. HOW OSC33K 8F07,--','.7
C2553300
862711300
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66R2751 -t
8269 132664700 5,131
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1
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7SOK 350K
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I.1II
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nUTPuT9 17JZ8
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TO 1902-613E1
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5- IO2iNTERLU;It
411
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I 26
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I,_-
TOPW200-E03
(SF)
410547
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-TO 61131-1,5V (2N)
VIOIA1401712 OUTPUT
33GY7ON -OF5
-C10480v 1.01 ',Hi
0RF101
G.
2
11028.2U14
L 1038.2014
Vo0113
DAMPER
33GY 7
#1031477.14
Al/.:1014 1:011325CL,F 4'.,0uFn5v- ,75v
1.145 v
^62
I*Cali4701
r TO PW200E 31 PM
-E1r L5
1470
V101H0642 OUT
DAMPER33617
12
T102
TO Pw200.106C111 (3011.0/
(3130VITO PW200-E)4
1201
.6TO 1456(40)
32
11
7-11-0.1182-1 V
(3E) TOPW200 Eli
(BF)
HV DEC TSBIOI
C106027
02716(05)1 541 TO PW200-E49
(5N1
C102
1821401R2
3 VERT
Iit
v103
I3KV *1.5KV
33081330812122321223
NOTES:
I y IWO
2 ALL RESISTANCE VALUES ARE IN OHMS3 ALL CAPACITANCE VALUES LESS THAN I0 ARE IN
1/0 10 AND ABOVE ARE P UUF, EXCEPT AS 1.201-GATED
4 ALL RESISTORS ARE WATT. EXCEPT AS INDI-CATED
5 *INDICATES 5%6 FOR CONTINUED SAFETY REPLACE THE FOLLOWING
-SHELF TYPE" COMPONENTS WITH ORIGINAL TYPEOR RCA APPROVED TYPE ONLY11000 IDENTIFIES SPECIAL WIREWOUND RESISTORS
attIDENTIFIES SPECIAL FILM RESISTORS.IDENTIFIES SPECIAL CAPACITORS(PLACEMENT PARTS LIST IN THIS SERVICE
DATA FOR REPLACEMENT PARTS
7 FOR CONTINUED X-RADIATION PROTECTION. REPLACE THE PICTURE TUBE AND HIGH VOLTAGERECTIFIER WITH ORIGINAL TYPE OR RCA APPROVEDTYPE ONLY
5 VOLTAGES ARE MEASURED TO CHASSIS GROUNDWITH A -VOLTOMYYST- WO SIGNAL) AND SHOULDHOLD WITH* 20% AT RATED SUPPLY VOLTAGE.
v206 V202 V201VERT OuTE SOUND GET( SOUND IFvERTOSC Au010 OUT SYNC
17,128 178F11 EGHBAE23_ _E.-2 E42 43 E51
2
r ------KFt 137 7 %nosKINESCOPEI 36145 ECG8A 12CNP4A
3 4 5VW
12 5-y.0 249
.Ck
V2042ND RIX IF
4JC6AE2t- 1201
V203isT Put IF46TE
E
5 5 4C260
Ii000 V20510001
VIDEO OUT7
HORIZ OSC6JV8 8F07/N
E29A (33C EL3 A e0 0 4II 014 5
PW200
AEC 1( V207
1 C248)CO3
COPYRIGHT 1972 BY ELECTRONIC TECHNICIAN/DEALER I EAST FIRST STREET. DULUTH. MINNESOTA 55802
-
PROVIDES YOU WITH ACOMPLETE SERVICE FORALL YOUR TELEVISIONTUNER REQUIREMENTSAT ONE PRICE.
UNER REPAIR
VHF Or UHF Any Type $9.75.UHF/VHF Combo $15.00.
In this price all parts are included.Tubes, transistors, diodes, and nuvistorsare charged at cost.
Fast efficient service at our four con-veniently located service centers.
1 year guarantee backed up by thelargest tuner manufacturer in the U.S.-SARKES TARZIAN, INC.
All tuners are cleaned inside and out,repaired, realigned and air tested.
TSG
TUNER REPLACEMENT
Replacement Tuner $9.75.
This price buys you a complete newtuner built specifically by SARKES TAR-ZIAN INC. for this purpose.
The price is the same for every typeof universal replacement tuner.
Specify heater typeParallel 6.3VSeries 450 mASeries 600 mA
All shafts have the same length of 12".Characteristics are:
Memory Fine TuningUHF Plug InUniversal MountingHi -Gain Lo -Noise
If you prefer we'll customize thistuner for you. The price will be $18.25.Send in original tuner for comparison pur-poses to our office in INDIANAPOLIS,INDIANA.
TUNER SERVICE CORPORATIONFACTORY -SUPERVISED TUNER SERVICE
MIDWEST 817 N. PENNSYLVANIA ST., Indianapolis, Indiana TEL: 317-632-3493(Home Office)
EAST 547-49 TONNELE AVE., Jersey City, New Jersey TEL: 201-792-3730SOUTH 938 GORDON ST., S.W., Atlanta, Georgia TEL: 404-758-2232SOUTH-EAST 1505 CYPRESS ST., Tampa, Florida TEL: 813-253-0324WEST SARKES TARZIAN, Inc. TUNER SERVICE DIVISION
10654 MAGNOLIA BLVD., North Hollywood, California TEL: 213-769-2720... for more details circle 135 on Reader Service Card
APRIL 1972, ELECTRONIC TECHNICIAN/DEALER J 19
-
PHILLIP DAHLENEditor1 East First Street 'Duluth, Minn. 55802(218) 727-8511
ALFRED A. MENEGUSPublisher757 Third AvenueNew York, N.Y. 10017(212) 572-4838(212) 572-4839
TOM GRENEYPublishing DirectorJOSEPH ZAUHARManaging EditorBERNICE GEISERTAssociate EditorGAYNELLE DAVIDSONProduction ManagerJOHN PASZAKGraphic DesignLILLIE PEARSONCirculation FulfillmentJOHN KESSLERManager, Reader Services
MANAGERS
JIM SMITH43 East Ohio StreetChicago, III. 60611(312) 467-0670
CHUCK CUMMINGSAd Space South/West613 North O'ConnorIrving, Texas 75060(214) 253-8678
KEN JORDANDONALD D. HOUSTON1901 West 8th StreetLos Angeles, Calif. 90057(213) 483-8530
CHARLES S. HARRISONCY JOBSON57 Post StreetSan Francisco, Calif. 94104(415) 392-6794
ROBERT UPTONTokyo, JapanC.P.O., Box 1717
ELECTRONICTECHNICIAN/DEALER
APRIL 1972 VOLUME 94 NUMBER 4
This month's cover photo, supplied through the courtesy of Blonder -Tongue Laboratories,Inc., shows Isaac S. Blonder (left) and Ben H. Tongue (right) explaining the theory of Satel-lite Telecommunications to George E. Queen, marketing manager of Homestead Enterprises.The diorama shown is a replica of Fairway Townhouse Living at Spring Lake Heights, N.J.More information concerning space-age TV is included in the article beginning on page 64.
3 TEKFAX: Up-to-date schematics for easier servicing.22 EDITORIAL: Three Brothers.
24 LETTERS: Pertinent comments concerning past issues.26 NEWS: Events of interest to our industry.30 READER'S AID: What you need or have for sale.
34 NEW AND NOTEWORTHY: Merchandise of special interest.
FEATURES
41 TEKLAB REPORTPart II in our description of interesting features found in Panasonic's Model CT -771Portable Color -TV Set.
48 PANASONIC'S MODEL SP -10 TURNTABLEAnother first-hand report concerning unusual features observed in a new, high -qualityaudio product.
51 WIDEBAND DISTRIBUTION EQUIPMENTSome basic principles concerning CATV systems that you should know if your cus-tomers are to receive the best reception possible from their installation-by D.Lieberman.
60 GLAD TO MEET YOU "SLIM JIM"Our evaluation of a new approach to aerosol containers which should make your ser-vicing job easier.
62 TEST INSTRUMENT REPORTReviewing specifications for RCA's WR-515A Master Chro-Bar Generator.
64 GUEST AUTHOR: SATELLITE TV ... COMING DOWN TO EARTH!Isaac S. Blonder-co-founder and chairman of the board of Blonder -Tongue Laborato-ries-as a member of the EIA Tr -34 Committee for satellite TV, has some exciting in-formation concerning some revolutionary home antenna systems that you may soonbe installing for international TV reception.
66 COLORFAX: Tips for easier colcr-TV set repair.
68 NEW PRODUCTS: Instruments and components to make your job easier.
71 DEALER SHOWCASE: These items may increase your sales revenue.
73 TECHNICAL LITERATURE: Informative material that you may need.
74 ADVERTISER'S INDEX: Manufacturers concerned about you.
75 READER SERVICE: A source of additional information.
[YRI A HARCOURT BRACE JOVANOVICH PUBLICATION "AI
HARCOURT BRACE JOVANOVICH PUBLICATIONS: James Milholland, Jr., Chairman; Robert L. Edgell,President; Lars Fladmark, Senior Vice President; Richard Moeller, Treasurer; John G. Reynolds,Vice President; Thomas Greney, Vice President; Ezra Pincus, Vice President; Bruce B. Howat, VicePresident; James Gherna, Vice President.
ELECTRONIC TECHNICIAN/DEALER is published monthly by Harcourt Brace Jovanovich Publications.Corporate Offices: 757 Third Avenue, New York, New York 10017. Advertising Offices: 43 EastOhio Street, Chicago, Illinois 60611 and 757 Third Avenue, New York, New York 10017. Editorial,Accounting, Ad Production and Circulation Offices: 1 East First Street, Duluth, Minnesota 55802.Subscription rates: One year $6, two years $10, three years $13, in the United States and Canada.Other countries: one year $15, two years $24, three years $30. Single copies: 750 in the U.S.and Canada; all other countries $2. Second class postage paid at Dansville, New York 14437.Copyright (.c.) 1972 by Harcourt Brace Jovanovich, Inc.
POSTMASTER: Send form 3579 to ELECTRONIC TECHNICIAN/DEALER, P.O. Box 6016, Duluth,Minnesota 55802.
20 ELECTRONIC TECHNICIAN/DEALER, APRIL 1972
-
OUR NO I GOALTO MAKE
GENERAL ELECTRICYOUR BEST BU"
We're in thisbusinesstogether.Semiconductorsyou can depend onfor customerswho depend on you.
Tube Products Department, Owensboro, Kentu:ky 4?301
GENERAL ELECTRIC
-
EDITORIAL
Three Brothers
Three brothers were told that within a few years they would be traveling to a foreign country.In preparation for the journey, the first brother obtained several books listing the mostcommonly used foreign phrases, setting all of these phrases to memory. He then practicedso that after a time he became highly skilled at recognizing the foreign phrases andreturning other appropriate phrases.
The second brother did not take the time to memorize as much information as the first. Hemerely learned the meaning of many of the more commonly used foreign words. Andwith the time that he saved in not memorizing more, this brother studied techniques forcombining the words into useful sentences.
The third brother followed basically the same techniques as the second, except that he spentmore time studying-thus learning more words and more effective ways of combiningthem into sentences.
Upon arriving in the foreign country, the first brother discovered that although his manyphrases proved useful, too frequently the people speaking to him failed to use the samephrases that he had learned. He worked hard to memorize more and more phrases, but therewas much confusion and frustration-the first brother finally deciding to call it quitsand leave the country.
The second brother initially found things even a little more difficult than the first brother.And at the start he even borrowed a few of his first brother's stock phrases. But hispreparation did prove helpful and in a short time he was able to understand most foreignsentences and was able to respond in sentences that weren't too awkward.
The third brother also found it helpful to know a few of the stock foreign phrases, but hadno basic difficulty in adjusting to the foreign language. Better yet, soon he was so competentthat he was even able to confidently address large groups.
As you have probably guessed, the three brothers represent three men with varyingelectronic backgrounds. The first brother was a semi -skilled technician, who could servicesome of the more typical problems encountered in a defective circuit, but who becameincompetent if the trouble happened to be something out of the ordinary.
The second brother was a technician with some background in theory, and with practicehe was able to handle nearly any service problem that he encountered. While the third brotherhad progressed to the point where he was not only able to service electronic circuitry,he could even design it.
Several years ago a service dealer asked my advice concerning the selection of a newpart-time employee. I suggested two high-school students. One had some knowledge of basicelectronics and was even able to design simple tube circuits (there weren't any practicaltransistor circuits at that time). The other had a great deal of practical experiencetearing down old radios (a lot of people-including me-started out that way) and couldfix some of the more obvious circuit defects.
The service dealer hired the second student, feeling that the first would waste too muchtime tinkering to make the product even better, while the second would stick to his jobof checking tubes and more obvious work-that's where the money was.
I am sorry to report that with the advent of color TV and solid-state circuitry, this servicedealer found it progressively more difficult to service the new circuitry encountered andfinally entered another profession.
While taking part in one of the discussion groups a year or so ago at a National ServiceConference, I got into a rather heated debate with a service dealer who felt that all electronictechnicians should disregard theory-since such isn't needed for effectice servicing.To us that is like saying, "You don't have to know how a TV set works merely to fix it."We feel that this is like the philosophy of the first brother, who memorized the servicehints in Technical Digest, Colorfax-and all the other sources of service information that hecould get his hands on-but who never took the time to learn some of the basic theory
22 I ELECTRONIC TECHNICIAN/DEALER, APRIL 1972
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concerning why these service tips worked. If he encountered a new circuit that had not yetbeen described in a trade journal or service literature, he wasn't able to quickly sketcha portion of the defective circuit; and knowing what should be expected from suchan assortment of components, service it.
It is our position that electronic technicians must have an understanding of some basictheory in order that they accomplish effective servicing and maintain their competency withthe development of increasingly complex circuitry. Although beautifully designed, howmany electronic technicians are now ready to service the portable color -TV set described inthis and the previous issue of ELECTRONIC TECHNICIAN/DEALER? The public wants tobuy the most advanced electronic products available. Why? Because typically such productscost less and provide better service. Color -TV sets are now less expensive, have betterquality pictures, greater stability and last longer than the earlier B/W -TV sets. The techniciansthat couldn't keep up, that ignored the need for theory, that made their money strictlythrough tube testing and obvious maintenance, are becoming a rarity-most of them havingalready been forced out of business.
When speaking of theory, we do not suggest that anyone but the designer (the third brother)be concerned with theory to such depth that it include the valence -electron configurationsassociated with the doping of semiconductor materials, the use of calculus fordetermining various factors in the nonlinear operation of basic circuitry, or even some ofthe complex equivalent circuits derived as an aid in calculating circuit function over variousfrequency ranges. We would be the first to agree that such use of theory is not yetneeded for effective servicing-and hopefully never will be. However, when it comes todetermining whether a coil and capacitor combination is being used to trap out interferencesignals or enhance the signal required, then its the level of theory that the averagetechnician should know.
Other examples of the theory that an electronic technician should know-if he is going tomake the grade-are included each month in ELECTRONIC TECHNICIAN/DEALER as we presentquestions and answers of the same type as those found in the CET examination.
The CET examination is not intended to be a test that all electronic technicians will be ableto pass. The test would serve no purpose if the first brother, described earlier, was able topass it. For he didn't have the background to make a claim to a future in professionalelectronic servicing. Only the second and third brother should be able to pass theexamination. Otherwise, the test would be watered down to the point that one would nolonger be able to boast, "I took a CET exam and passed it! I feel confident of my future in
electronics!"
We were appalled by one of the resolutions passed by The Western State Conference lastJanuary in Sacramento, Calif., stating that the CET Test should be practical and contain lesstheory questions. That's like saying, "Open the door to Brother One." It might be niceto be a "good guy" and let everyone in, but will the TV -set manufacturers also be good guysand produce obsolete products so that the first brother can service them? And will thepublic continue to accept the first brother's less effective servicing techniques, giving onlyeasy state licensing examinations-if requiring any exam at all?
We feel that the current CET examination contains the proper balance of theoretical and"practical" questions. (Sections I, II and III covered thus far concentrate a little more ontheory than some of the other sections.) There has been a tremendous response to the current
CET testing program (note this month's news section), and in some parts of the countryvirtually the entire membership of some local associations has passed the CET examination
(note last month's news section). So why make it a test that anyone can pass?
ELECTRONIC TECHNICIAN/DEALER is dedicated to the task of helping all electronic technicians
(whether or not they choose to take a CET examination) so that they have the skills
required (both practical theory and nut -and -bolts knowledge of past problems) for success
in the electronic servicing profession.
APRIL 1972, ELECTRONIC TECHNICIAN/DEALER 23
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Reader comments concerning pastfeature articles, Editor's Memos, previousreader responses or other subjects ofinterest to the industry.
Too Much Theory in CET ExamI have read with concern as well as
interest, many of the letters concern-ing the CET program, but when itcame to the example given of the CETtest, I just had to write and state myopinion.
It has been about 32 years since Ifirst went to electrical school, andfrom there to radio school, and thento instruct for about a year. Needlessto say, I had all the basic electricaland electronic theory; and so with thisbackground and books, I also learnedthe repair of TV, color TV, and solidstate as they came along.
I have been servicing in my ownshop, with the same people in thesame location for over 25 years, andnever in these 25 years would I havehad any occasion to use the questionsor answers to questions one, two orfour in the Section I, Basic Mathe-matics test. In fact, I couldn't answerthem without looking up the informa-tion required. Why should I relearnwhat I had no occasion to use andhave forgotten in the past 30 years?For example, the No. 1 question, "A0.01µf capacitor has what impedanceat 5kHz?" Now think, what on earthwould I use this information for inservicing? You might just as well askan auto mechanic, "What is the fric-tion loss in ft -lb of energy due to ringfriction against the cylinder walls at40 miles per hour?" What I'm gettingat is that it's maybe fine to know ifyou want to impress someone withyour math; but certainly to be agood TV technician requires so manythings to remember, and think about,that it's foolish to fill your mind withthese things. Besides, this is an en-gineer's problem. I even wonder inmost cases, where different typewaves, different peaks and even some-what leaky capacitors are present, thatany answer would be very correct.Also, where in any circuit commonlyused do you find the capacitor theonly thing to take into consideration isthe impedance?
With this trend of thought, you canalso see the very unimportance of No.2 and No. 4 in the test. The testshould not be like a school test, buta testing of technical servicing ability.Why not make it about things in-volved with servicing.
There are so many things one hasto learn to be good enough and fast
enough to earn a living, at reasonablewages, in servicing! Contrary to whatS.F.C. Ronald Bromwick says in his let-ter, I'm sure that with time he will findthat besides understanding theory andmath, being a "symptoms mechanic"is very important in this. Symptomsare the key to almost every servicingproblem. What you see and hear arejust as important to a TV radio tech-nician as they are to a doctor in cur-ing the ill.
Getting back to the test, questionNo. 3 in my opinion from a practicalpoint of view should be put different-ly. I think the question should givethe resistor, in most cases we knowthis anyway, and ask what the currentthrough it would be. This problem inservicing must be solved many, manytimes. In servicing you very seldommeasure the current because it's notpractical, almost all measuring is involtage and resistance because theycan be done more easily without dis-connecting, and thus find the current.Also, due to varied frequencies, itwould be almost impossible to get ac-curate meter measured current. Whatis important, I feel, is that the trendof thought should be strictly in thedirection of servicing.
As a whole, I can't help wonderingwho makes up the questions for theexam? I can hardly believe they arevery service minded or service ex-perienced, if this is going to be thetrend of all the questions in the exam.As it is, I would see no point in goingback to my studies to pass this test. Itwould not prove a thing as to mycapability. Sorry and very sincerely,
CHARLES F. MORRISCHUCK'S RADIO & TV
You are not alone in your opinionthat there is too much theory in theCET examination. As indicated in myEditor's Memo (which was writtenprior to our receipt of your letter),even the majority of those voting atThe Western State Conference holdyour position. However, as also indi-cated in my memo, there are also oth-ers (including myself) who feel other-wise-believing that it is importantto have some understanding of the"lighter" theories related to circuitryserviced. ELECTRONIC TECHNICIAN/DEALER has had no direct influence inthe writing of the CET examination,it having been written by a committeeof service dealers who have manyyears of experience in servicing con-sumer and commercial electronicproducts.
I also had to refresh any memorywhen re -typing CET examination typecopy for publication in our news sec-tion-hut it didn't require a great deal
continued on page 32
24 ELECTRONIC TECHNICIAN/ DEALER, APRIL 1972
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SERVIC technicians know that Color TV repair demands moretime and effort. That's why Sprague strives to simplify Color TV capacitor selection.
COLO TV capacitors by Sprague come in the exact rat-ings required to meet the exacting requirements of Color TV.
service becomes more demanding as Color TV keeps ex-panding. That's why exact capacitor ratings are important. Theyhelp you to restore original set performance.
EASIE selec'ion of replacement ca-pacitors for Color TV is assured when you look to the broadSprague line. You'll get the capacitcr you need-when youneed it-every time.
Just off the press! See your Sprague Distributorfor a free copy of our new 40 -page K-1 10 Twist-Lok®and Print-Lok Capacitor Replacement Manual, orwrite to: Sprague Products Company, 65 Marshall St.,North Adams, Mass. 01247
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APRIL 1972, ELECTRONIC TECHNICIAN/DEALER 25
SPRAGUE®THE MARK OF RELIABILITY
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Name
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NEWS OF THE INDUSTRY
Electronics Industry CouncilHolds Fifth Official Meeting
The fifth official meeting of the Electronics IndustryCouncil was called to order on January 28th by chairmanDick Glass, CET. He welcomed the council members andguests, and thanked the trade press for its help in promot-ing the council idea and the projects of EIC. He pointedout that the success of any single project of the EICwas not nearly as important as learning to work togetherfor mutual benefit, and the betterment of the industry forthe consumer.
Mr. Joe Groves of the Electronic Industries AssociationConsumer Product Div., and Howard W. Sams Co., re-ported on parts availability. He mentioned that during thepast period the Sams Co. had made efforts to acquire addi-tional information directly from parts distributors and repson a face-to-face basis. He indicated no great amount ofsuccess at this time, but that the program was being im-plemented and additional work would be done during thenext period. Mr. Groves also illustrated the moves thatthe industry has made during the past few years to stan-dardize replacement parts.
Frank Moch, executive director of NATESA, discussedNATESA's "Town Meeting" program. He reported thatmanufacturers' reputations for parts service vary widelyfrom place to place. He emphasized the proliferation of"special" parts and the problems of "re -engineering"sometimes needed to use so-called "standard" parts.
Joe Risse of International Correspondence School, rep-resenting the Society of Broadcast Engineers, noted that
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26 I ELECTRONIC TECHNICIAN/DEALER, APRIL 1972
the FCC is investigating the problem of FM interference.It is on their docket No. 19183.
Leo Shumavon, president of NATESA, reported onservice association cooperation. He mentioned that co-operation is at an all-time high, and urged better under-standing of the problems among manufacturers, distribu-tors, dealers and particularly the news media. He men-tioned the upcoming August joint convention between
NATESA president Leo Shumavon makes a presentation on service asso-ciation cooperation at the all day affair. Photo courtesy of Dick Glass,CET.
NATESA, NEA, ETA of Louisiana and ISCET, whichall groups were working on. Mr. Shumavon also noted thatwider publicity of the importance of service is needed,especially by TV broadcasters and by the commercial press.Some discussion was held concerning the need for expand-ed service association membership. Gail Carter, executivevice president of NEDA, noted that the service associa-tions had no monopoly on the problem of a few joiningand doing the work for the benefit of many.
Morris L. Finneburgh, Sr., EHF, reported that he hadcontacted 10 antenna manufacturers for support in theTelevision Reception Improvement Program (TRIP)which we have covered in previous news reports. Of thatnumber, only three manufacturers have responded. Mr.Finneburgh therefore offered to resign his chairmanshipof the antenna manufacturers subcommittee of TRIP. Mr.Shumavon made a motion that the EIC not accept Mr.Finneburgh's resignation. And although the motion waspassed unanimously, Mr. Finneburgh did resign. Mr.Finneburgh then offered his total support to EIC and theTRIP program in the future.
John Norton, acting secretary, clarified the resignation,stating that Mr. Finneburgh has resigned from the commit-tee and the subcommittee; and EIC has accepted the resigna-tion in a desire to increase cooperation by manufacturersother than FINCO, and not because of any feeling that hewas not doing an excellent job.
Mr. Groves suggested that Tom Surber of Sams Co.might fill the position vacated by Mr. Finneburgh. Mr.Surber was elected.
George Bartlett of the National Association of Broad-casters reported on progress of the broadcasters regardingTRIP. He said that progress was slow, due to staff prob-lems.
Sid Sabel, chairman of the TRIP program, showed ma-terial that has been produced by NEA, consisting of twoforms for technicians to use on service calls that providechecklists to show the homeowner just what may be neededto improve reception, as well as the cost. Also mentionedwere Blonder -Tongue Co's "Solution" publications whichhave valuable ideas directed towards dealers for makingmoney and understanding the antenna business.
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Emmett Mefford, CET, NEA executive committee chairman (lookingtoward camera) examining the TRIP booth at the NARDA showcase.Photo courtesy of Dick Gloss, CET.
Don Martin, editor of ELECTRONIC SERVICE DEALER,reported that no real decision had been made by many ofthe groups as to possible support of the Hall of Fame.Support is needed before future work can be done.
Sid Sabel presented a program for manufacturers toprepare in -shop training slides or films for technical train-ing, quickly, on new products on a shop by shop basis.Joe Groves was asked to present the program to the EIAfor consideration at their next meeting.
Philco-Ford InauguratesTelephone Hot -Line Service
Under a new ordering plan, a Philco service agent canplace his order for parts from anywhere in the country(even the customer's home) by dialing a special toll -freetelephone number. The order is then recorded androuted to the nearest Philco-Ford regional parts and ser-vice depot in Philadelphia, Chicago, Atlanta, Dallas or LosAngeles, where it is filled within 24 hours. For each call,the service agent is charged $1.00 to cover administrativecosts of the program.
John W. Miller, general manager of the parts and ser-vice at Philco-Ford, predicted that 98 percent of Philco's5500 service agents will utilize the new communicationsnetwork, including several hundred agents who regularlyorder by phone. At present, about 75 percent of all partsorders are received through the mails.
"By instituting this network, we can offer the sameswift, dependable service to the agent in rural Wyomingthat we provide his counterpart in New York City orPhiladelphia," Mr. Miller said.
Services of P.T.S. ElectronicsNow Covered by RCA Warranty
Mr. S. Tyra, manager of Commercial Services for RCA,has announced that P.T.S. Electronics, Inc., with its sixlocations in Bloomington, Ind.; Springfield, Mass.; Long-view, Texas; Denver, Colo.; Jacksonville, Fla.; and Sacra-mento, Calif., is fully authorized to accept and repair anyRCA tuner in warranty at no charge under the RCAWarranty Agreement. Mr. Tyra also stated that any dealermay send their defective in -warranty tuners (90 days forB/W -TV sets, one year for color -TV sets) directly toP.T.S. Electronics, Inc. prepaid and with completed re-turn material tag. P.T.S. will repair and return the tunerprepaid at no charge to the dealer-on the same day thatit was received.
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APRIL 1972, ELECTRONIC TECHNICIAN/DEALER 27
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ANTENNASA whole new line of antennas from Zenith
built to deliver a peak picture... and peak profits for you.Zenith's new Chromatenna line incorporates all the elec-tronic knowledge and "know how" of Zenith engineering.20 different antennas, for color and black & white TV,meet every reception condition. Result: a superb picturefor your area.
The new line includes 7 antennas for VHF/UHF/FM, 5for VHF/FM and 8 for UHF/FM. And a complete line of an-tenna accessories.
The sales skills that helped make Zenith a sales leaderhave been used to put together a complete merchandising
28 I ELECTRONIC TECHNICIAN/DEALER, APRIL 1972
package. Convenient Display Rack. Display Header. WallBanner. presentation Catalog. Ad Mats. Result: more an-tenna sales, peak profits for you.
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What happens when male canmeets female can?It's far more than love at first sight...its a whole new way to use pro-fessional chemicals. In terms ofconvenience. And savings.
Because now, you can take it withyou. "It" being the profit -makingpowerofChemtronicsTUN-O-WASH,TUN -O -FOAM and TUN-O-BRITE.The great "space war"With all the tubes and parts a serv-iceman has to carry, he's often ata loss for space to fit in a large canof chemicals as well. Even knowinghe can often make $5.00 to $10.00+more per call.* And when he wantsto do an extra -thorough job, de-
gunking with adegreaser beforeusing a cleaner/lubricant, theproblem's evenworse. Until now.The world's
finest chemicals are nowthe world's most portableWith a Chemtronics Transfer Kit, youcan carry all -you -need ina shirt -pocket. With the re-fillable "Slim -Jim" cans ineach Transfer Kit (eachcan, no bigger than thekind you fill a butane lighterfrom), you can carry a complete tuner service kit nyour pocket. And still save money on the "economy -size" cans you re -fill from.
Proof? Ounce -for -ounce, transfer kits can saveyou up to 25% or more on the world's favorite elec-
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1HE them a breeze to take along.It's the kind of idea only aserviceman would think ofSINGLE Its simple-no special gadg-ets. Just half a minute, and
the "Slim -Jim" is refilled with enoughto service six to ten tuners (and thelarge cans are still in the shop forbench use!).Why wait? It's atyour local dis-tributor's now"Sex and the Sin-gle Can:' morepopularly known as the Chemtron-ics Transfer Kit, comes in three vari-eties, to meet the needs of knowl-edgeable technicians:TCK-1 Double -DegreaserTwo 24 oz. TUN -O -WASH, Two "Slim -Jim" Transfer CansTCK-2 Degreaser & Polisher/LubricantOne each of Bench Size TUN -0 -WASH and TUN -O- BRITE, Two "Slim -Jim" Trarsfer Cans
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APRIL 1972, ELECTRONIC TECHNICIAN/DEALER 29
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READERS' AIDSpace contributed to help serve thepersonal needs of you, our readers.
Manual NeededI have a Solar Exam-eter Model
CF, manufactured by the Solar Mfg.Co., New York. The serial number is93713. I would appreciate a copy ofan operating -instruction manual. Allcost will gladly be paid by me.
ARLO LUSBY 11324 North Shadyglen DriveCovina, Calif. 91722
For SaleI have the following items for sale:
Back issues of SERVICE Magazinesfrom May, 1952 to October, 1958and ELECTRONIC TECHNICIAN/DEAL-ER Magazines from January, 1959 toDecember, 1971. Make an offer. Also,I have a TV -FM sweep generator forsale.
JAMES C. GRANTGrant Radio & TV927 Blackburn Ave.Ashland, Ky.
Information NeededSome time ago 1 purchased a B & K
tube tester Model 675, automatic cardtype. I have discovered that I cannottest any of the newer type tubes. Isthere some way to modernize thistester? Many of the later type tubesare similar to the older types with dif-ferent base arrangements. Any helpanyone can give me will he greatlyappreciated.
RICHARD WOLFWolf's Radio & TV RepairBox 325Wishek, N. D. 58495
For Sale or TradeI have a Nordmende solid-state dis-
tortion meter, ranges 0.03% to 100%,0.1 my to 300v rms. I will sell it orexchange for a CRT tester.
BOB KREJCIKAudio HiFi Service228 Norman Ave.Brooklyn, N. Y. 11222
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30 ! ELECTRONIC TECHNICIAN/DEALER, APRIL 1972